Created http_client (markdown)

http_client.md

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+# Example
+
+Here's an example of using the [HTTPClient](class_httpclient) class. It's just a script, so it can be run by executing:
+
+```c
+c:\godot> godot -s http_test.gd
+```
+
+It will connect and fetch a website.
+
+```python
+extends SceneMainLoop
+
+
+func _init():
+
+	var err=0
+	var http = HTTPClient.new()
+
+	var err = http.connect("www.php.net",80)
+	assert(err==OK)
+	while( http.get_status()==HTTPClient.STATUS_CONNECTING or http.get_status()==HTTPClient.STATUS_RESOLVING):
+		http.poll()
+		print("Connecting..")
+		OS.delay_msec(500)
+	assert( http.get_status() == HTTPClient.STATUS_CONNECTED )
+	print("Connected! Requesting INDEX")
+	var headers=[
+		"User-Agent: Pirulo/1.0 (Godot)",
+		"Accept: */*"
+	]
+
+	err = http.request(HTTPClient.METHOD_GET,"/ChangeLog-5.php",headers)
+	assert( err == OK )
+	while (http.get_status() == HTTPClient.STATUS_REQUESTING):
+		http.poll()
+		print("Requesting..")
+		OS.delay_msec(500)
+	assert( http.get_status() == HTTPClient.STATUS_BODY or http.get_status() == HTTPClient.STATUS_CONNECTED )
+
+	print("has response? ",http.has_response())
+	if (http.has_response()):
+		var headers = http.get_response_headers_as_dictionary()
+		print("code: ",http.get_response_code())
+		print("**headers:\n",headers)
+		# ok let's get the body!
+		if (http.is_response_chunked()):
+			print("Respose is Chunked!")
+		else:
+			var bl = http.get_response_body_length()
+			print("Response Length: ",bl)
+
+		var rb = RawArray()
+		while(http.get_status()==HTTPClient.STATUS_BODY):
+			http.poll()
+			var chunk = http.read_response_body_chunk()
+			if (chunk.size()==0):
+				#wait for a bit
+				OS.delay_usec(1000)
+			else:
+				rb = rb + chunk
+
+
+		print("bytes got: ",rb.size())
+		var text = rb.get_string_from_ascii()
+		print("Text: ",text)
+
+		
+	quit()		
+	
+	
+
+```